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Functions taglib is not working for jstl comparison. uri : <%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn"%> i have included the jstl.jar in my lib folder and in order to check its version i extracted the jar and the MANIFEST.MF shows the below details :

Specification Version : 1.0 Implementation version : 1.0.6

When i tried the above configuration to do a case insensitive comparison as : 

<c:when test="${fn:toLowerCase(MYVAL) == 'myval'}">

It gives me below error : 

EL functions are not supported.
user207421
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CodeBRKR
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  • Where did you read that JSTL 1.0 would be the correct version to use for that URI? Pick [1.2](https://repo1.maven.org/maven2/javax/servlet/jstl/1.2/jstl-1.2.jar) instead. – BalusC Feb 18 '20 at 09:20
  • i just added both the specification version and implementation version that i found in MANIFEST.MF – CodeBRKR Feb 18 '20 at 09:22

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